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巫、傩民间祭祀文化的聚合体——湘西土家族梯玛信仰“集成”式描述及其仪式音声环境分析 被引量:2
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作者 赵书峰 《交响(西安音乐学院学报)》 2007年第2期21-26,共6页
梯玛仪式,这种巫、傩文化结合的土家族"民间仪式类"传统文化,一直长期地支配着土家族的信仰活动与社会生活。无论是在仪式行为、艺术形态还是文化内涵等方面都有着浓厚的土家族巫师祭祀的民族特色。通过对其仪式行为及音声环... 梯玛仪式,这种巫、傩文化结合的土家族"民间仪式类"传统文化,一直长期地支配着土家族的信仰活动与社会生活。无论是在仪式行为、艺术形态还是文化内涵等方面都有着浓厚的土家族巫师祭祀的民族特色。通过对其仪式行为及音声环境的简要描述和分析,发现其隐含的土家族社会、文化、历史、民俗、民间信仰等方面的文化意义广泛而深厚。特别是梯玛神歌所用的土家语,是反映土家族历史、文化的"百科全书"。 展开更多
关键词 湘西土家族 梯玛信仰 梯玛神歌 音声环境
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荆山《扛神》“信仰”描述及其“音声”分析
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作者 李素娥 《襄樊学院学报》 2009年第10期82-88,共7页
《扛神》是流行于荆山一带的民间传统"巫教仪式",它一直长期地支配着荆楚腹地的信仰活动与社会生活。无论是在仪式行为、艺术形态还是文化内涵等方面都有着浓厚的楚风巫师祭祀的民俗特色。通过对其仪式行为及音声环境的简要... 《扛神》是流行于荆山一带的民间传统"巫教仪式",它一直长期地支配着荆楚腹地的信仰活动与社会生活。无论是在仪式行为、艺术形态还是文化内涵等方面都有着浓厚的楚风巫师祭祀的民俗特色。通过对其仪式行为及音声环境的简要描述和分析,发现其隐含的荆楚社会、文化、历史、民俗、民间信仰等方面的文化意义广泛而深厚。特别是《扛神》仪式"音声环境"中所投射的"信仰",其深层次文化内涵、象征符号及发展现状,应该引起学术界的深刻关注和认真思考。 展开更多
关键词 荆山 《扛神》 仪式信仰 音声环境
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5.1环绕声电视节目的环境声制作实践——以《全能星战—巨星之夜》为例 被引量:1
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作者 侯大伟 《演艺科技》 2015年第12期21-24,53,共5页
通过《全能星战—巨星之夜》5.1环绕声的环境声制作实践,探讨在真实还原环境声的基础上适当增加环境声色彩的制作手段,从而为节目效果增色。
关键词 5.1环绕 环境 方式 环绕 主辅传
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音声中的集体记忆——湘中冷水江抛牌仪式音乐研究(上) 被引量:3
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作者 吴凡 《中国音乐学》 CSSCI 北大核心 2010年第4期112-121,共10页
该文以湘中冷水江程山村一名学满三年"新坛弟子"的"抛牌"仪式作为研究对象,试从集体记忆的视角阐释当地民间信仰中的"毕业典礼",以期了解民间仪式执行人如何实现其身份的转变,以及仪式音声所体现的地方... 该文以湘中冷水江程山村一名学满三年"新坛弟子"的"抛牌"仪式作为研究对象,试从集体记忆的视角阐释当地民间信仰中的"毕业典礼",以期了解民间仪式执行人如何实现其身份的转变,以及仪式音声所体现的地方文化建构。 展开更多
关键词 音声环境 集体记忆 抛牌
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SPEECH ENHANCEMENT METHOD FOR LPC AUTOREGRESSIVE MODEL AND SYSTEM IMPLEMENTATION OF COMMAND WORD RECOGNITION USED IN NOISY ENVIRONMENT
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作者 王承发 吕成国 +1 位作者 孙立新 李俊庆 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 1998年第2期113-120,共8页
At present, almost all the systems and products for speech recognition are working in quiet environment and their performances are degraded or even can′t work when they are operated in high noisy environment. In this... At present, almost all the systems and products for speech recognition are working in quiet environment and their performances are degraded or even can′t work when they are operated in high noisy environment. In this paper, after analyzing the features of speech and noise, a speech enhancement method for LPC autoregressive model for command words recognition used in noisy environment is proposed, and an experimental system is realized. In different background noisy environments, we conduct experiments about SNR, basic accuracy, noise resistant ability and system environment adaptability with different microphones. The experimental results show that the system has good recognition performance in high noisy environments. The system can resist many kinds of noises and meet the needs of application areas on the whole such as military, traffic, marketplace and factory etc. 展开更多
关键词 speech recognition noisy environment Wiener filter
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Improved speech absence probability estimation based on environmental noise classification 被引量:2
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作者 SON Young-ho LEE Sang-min 《Journal of Central South University》 SCIE EI CAS 2012年第9期2548-2553,共6页
An improved speech absence probability estimation was proposed using environmental noise classification for speech enhancement.A relevant noise estimation approach,known as the speech presence uncertainty tracking met... An improved speech absence probability estimation was proposed using environmental noise classification for speech enhancement.A relevant noise estimation approach,known as the speech presence uncertainty tracking method,requires seeking the "a priori" probability of speech absence that is derived by applying microphone input signal and the noise signal based on the estimated value of the "a posteriori" signal-to-noise ratio(SNR).To overcome this problem,first,the optimal values in terms of the perceived speech quality of a variety of noise types are derived.Second,the estimated optimal values are assigned according to the determined noise type which is classified by a real-time noise classification algorithm based on the Gaussian mixture model(GMM).The proposed algorithm estimates the speech absence probability using a noise classification algorithm which is based on GMM to apply the optimal parameter of each noise type,unlike the conventional approach which uses a fixed threshold and smoothing parameter.The performance of the proposed method was evaluated by objective tests,such as the perceptual evaluation of speech quality(PESQ) and composite measure.Performance was then evaluated by a subjective test,namely,mean opinion scores(MOS) under various noise environments.The proposed method show better results than existing methods. 展开更多
关键词 speech enhancement soft decision speech absence probability Gaussian mixture model (GMM)
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An Empirical Formula for Sound Absorption of Fibrous Materials
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作者 张新安 《Journal of Donghua University(English Edition)》 EI CAS 2008年第3期349-354,共6页
The sound absorption coefficient(SAC)curves of the nonwovens,fabrics,and thick fibrous layers with the frequency in the range of 125-3 200 Hz and cavity distances of 5 cm,10 cm,20 cm,30 cm and 40 cm were measured.Base... The sound absorption coefficient(SAC)curves of the nonwovens,fabrics,and thick fibrous layers with the frequency in the range of 125-3 200 Hz and cavity distances of 5 cm,10 cm,20 cm,30 cm and 40 cm were measured.Based on analysis,it is found that the SAC is actually in direct proportion to the relative vibration amplitude of the sound wave,resulting in obtaining a mathematical expression showing that the SAC changes with the frequency for a given material.Additionally,a good corresponding relation between the maximal SAC and the permeability of the materials is discovered,thus an empirical formula is established.As a result,a complete SAC formula has been developed.In this formula,the SAC is solely a function of the sound wave frequency and permeability of the material.In comparison with sound absorption spectra of several materials,the calculated results and results measured with the formula coincide well with each other. 展开更多
关键词 fibrous material SAC formula
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VOICE ACTIVITY DETECTION UNDER RAYLEIGH DISTRIBUTION 被引量:1
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作者 Li Yu Chen Jianming Tan Hongzhou 《Journal of Electronics(China)》 2009年第4期552-556,共5页
This paper presents an improved Voice Activity Detection (VAD) algorithm which uses the Signal-to-Noise Ratio (SNR) measure. We assume that noise Power Spectral Density (PSD) in each spectral bin follows a Rayle... This paper presents an improved Voice Activity Detection (VAD) algorithm which uses the Signal-to-Noise Ratio (SNR) measure. We assume that noise Power Spectral Density (PSD) in each spectral bin follows a Rayleigh distribution. Rayleigh distributions with its asymmetric tail characteristics give a better description of the noise PSD distribution than Gaussian distribution. Under this asstlmption, a new threshold updating expression is derived. Since the analytical integral of the false alarm probability, the threshold updating expression can be represented without the inverse complementary error function and low computational complexity is achieved in our system. Experimental results show that the proposed VAD outperforms or at least is comparable with the VAD scheme presented by Davis under several noise environments and has a lower computational complexity. 展开更多
关键词 Statistical Voice Activity Detection (VAD) Threshold update Rayleigh distribution Computational complexity
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Lung sounds auscultation technology based on ANC - ICA algorithm in high bat- tlefield noise environment
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作者 牛海军 冯安吉 +1 位作者 万明习 白培瑞 《Journal of Medical Colleges of PLA(China)》 CAS 2003年第1期60-64,共5页
AIM:To explore the more accurate lung sounds auscultation technology in high battlefield noise environment.METHODS: In this study, we restrain high background noise using a new method-adaptive noise canceling based on... AIM:To explore the more accurate lung sounds auscultation technology in high battlefield noise environment.METHODS: In this study, we restrain high background noise using a new method-adaptive noise canceling based on independent component analysis (ANC-ICA), the method, by incorporating both second-order and higher-order statistics can remove noise components of the primary input signal based on statistical independence.RESULTS:The algorithm retained the local feature of lung sounds while eliminating high background noise, and performed more effectively than the conventional LMS algorithm.CONCLUSION:This method can cancel high battlefield noise of lung sounds effectively thus can help diagnose lung disease more accurately. 展开更多
关键词 adaptive noise canceling ( ANC) independent component analysis (ICA) auscultation lung sounds
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Mario Paint: An Accessible Environment of Musical Creativity and Sound Exploration
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作者 Dr. Christopher Hopkins 《Journal of Literature and Art Studies》 2015年第10期847-858,共12页
Mario Paint, the 1992 Nintendo game for the Super NES, remains an accessible environment for musical creativity and sound exploration within its music mode. Although developed for a gaming system, the game's music mo... Mario Paint, the 1992 Nintendo game for the Super NES, remains an accessible environment for musical creativity and sound exploration within its music mode. Although developed for a gaming system, the game's music mode is a streamlined tool built upon basic music theory and music composition. Through familiar video game sounds and icon and Westem music notation, players are able to compose chipttme works and explore the nature of sound through an inviting interface. Similar music composition software upgrades the process of composition established in Mario Paint, allowing for digital distribution and dissemination. Mario Paint continues to inspire new projects in the areas of video games and scholastic studies. Mario Paint and its successors are very reasonable entry-level programs for chiptune composers and fledgling music students 展开更多
关键词 music composition Super NES NINTENDO music theory music production sound chip
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Noise Action Plans for the Acoustic Protection of Urban Areas around the Athens International Airport (A.I.A.) Strategic Noise Maps 2006 & 2011
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作者 Konstantinos Vogiatzis 《Journal of Civil Engineering and Architecture》 2011年第2期104-111,共8页
Athens International Airport "Eleftherios Venizelos" (AIA) is considered a pioneer international Public-Private Partnership, being the first major int. airport constructed with the participation of the private sec... Athens International Airport "Eleftherios Venizelos" (AIA) is considered a pioneer international Public-Private Partnership, being the first major int. airport constructed with the participation of the private sector with the BOOT method (Build, Own, Operate, and Transfer). AIA's 1st day of operation was in March 2001 and the aircraft traffic on 2006 reached 191.000 movements & 15.1 million passengers. According to the European Directive 49/2002 and the Joint Ministerial Decision 13586/724-28/3/06, Athens International Airport (AIA) is included in the category of"large airports" and it consequently comes under the authority of the above mentioned legislation on the evaluation and management of environmental noise. A complete Study on Aircraft Noise [1], according to the European Directive 49/2002 [2] and Joint Ministerial Decision 13586/724-28/3/06 was undertaken under the auspices of the Ministry of Environment, Energy & Climate Change, the Hellenic Civil Aviation Authority, and AIA S.A. In this article the following results are presented: (1) The 2006 Strategic Noise Map (SNM) of both indicators Lden and Lnight based on the ECAC.CEAC Doc 29 methodology "Report on Standard Method of Computing Noise Contours around Civil Airports", 1997 [3], (2) A statistical analysis of predicted vs measured noise levels based on the existing Noise Monitoring System, (3) Effects from the removal of marginally accepted chapter 3 aircraft, (4) A complete evaluation of results regarding calculation of area/land uses and number of individuals living in residences inside blocks exposed in various levels of noise, and (5) A full evaluation of Noise Action Plans (NAP) regrouping existing and foreseen actions FOR 2006 & 2011 scenarios, especially regarding among others, noise abatement procedures, a comprehensive noise insulation legal framework. 展开更多
关键词 Airport noise strategic noise maps noise action plans environmental acoustics acoustic landscape.
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The research about the application of multimedia assisted English teaching
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作者 Huan ZHAO 《International Journal of Technology Management》 2015年第6期33-35,共3页
multimedia courseware teaching can integrate images, voice, text, so that students can study in a relaxed, happy teaching environment in the form of the image lively. Through the analysis of the pros and cons of multi... multimedia courseware teaching can integrate images, voice, text, so that students can study in a relaxed, happy teaching environment in the form of the image lively. Through the analysis of the pros and cons of multimedia, it can be more practical for the modem technology of multimedia to assist English teaching and can get twice the result with half the effort. 展开更多
关键词 MULTIMEDIA Auxiliary teaching The English teaching
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Tracing the Holistic Voice in Ecological Space: Exploring Theodore Roszak's Ecopsychology in Henri Lefebvre's "Differential Space"
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作者 Su-chen Wu 《Journal of Philosophy Study》 2013年第9期843-856,共14页
The goal of ecopsychology is to awaken the inherent sense of environmental reciprocity that lies within the ecological unconsciousness. Proclaiming the spirit of ecopsychology, Theodore Roszak argues that psychotherap... The goal of ecopsychology is to awaken the inherent sense of environmental reciprocity that lies within the ecological unconsciousness. Proclaiming the spirit of ecopsychology, Theodore Roszak argues that psychotherapy is an urban movement, but human beings can never heal themselves until they reconnect with nature. Other therapies aim at healing the alienation between person and person, person and family, person and society; ecopsychology intends to heal the more primary alienation between the person and the natural environment. Henri Lefebvre's work has revitalized urban studies, geography and planning via concepts like the social production of space. Lefebvre claims that space is not an inert, neutral, and pre-existing given, but rather, an on-going production of spatial relations. According to Lefebvre, space is produced by three types of practice: spatial practices of physical transformation of the environment, practices of representation of space, and everyday practices of representational space. Lefebvre further presents a "differential space," named as such for its dialectical resistance to the forces of homogenization present in "abstract space." The aim of this paper is to trace the ecological voice from Roszak's The Voice of the Earth in Henri Lefebvre's "differential space." Roszak's ecopsychology has formed a differential space, acknowledging that the boundaries of dualism and separations such as mind and body, man and nature should be finally dissolved in terms of ecological sustainability. Within this space, a holistic approach and thinking are created and required to take into account perception of the inextricable relationship between all life and all phenomena. 展开更多
关键词 ecopsychology holistic worldview representations of space abstract space differential space ecological consciousness
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Ultrasonic frogs call at a higher pitch in noisier ambiance 被引量:4
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作者 Fang ZHANG Pan CHEN Zhuqing CHEN Juan ZHAO 《Current Zoology》 SCIE CAS CSCD 2015年第6期996-1003,共8页
The ultrasonic communication in Concave-eared torrent flogs Odorrana tormota is believed to be an adaptation to avoid masking by the intense low-frequency noise of the rushing stream in their habitat. The acoustic ada... The ultrasonic communication in Concave-eared torrent flogs Odorrana tormota is believed to be an adaptation to avoid masking by the intense low-frequency noise of the rushing stream in their habitat. The acoustic adaptation hypothesis for ultrasonic origin predicts that some organisms subjecting to persistent acoustic interference from broadband, low-frequency en- vironmental noise, might shift their signal frequency upward into frequency bands with lower noise energy. In other words, low-frequency environmental noise might cause upward shifts of species' vocalization frequencies making their signals more conspicuous. Presently, it is unclear whether male O. tormota adjust their signal features in response to a change in the ambient noise level. We tested the prediction of the acoustic adaptation hypothesis by recording the vocalizations of male O. tormota in- habiting two streams with different background noise levels in Huangshan in central China and comparing their call features in- cluding the fundamental frequency (F0). Results showed that the spectrotemporal characteristics of the vocal signals of males in the two habitats were indifferent, except the duration of the call harmonic segments and three parameters related to the call fun- damental frequency (F0). In terms of the F0, the pooled and individual frog data showed that flogs inhabiting the noisier habitat tended to emit calls having higher F0. The higher F0 increases the signal-to-noise ratio, thus benefiting the detection of vocaliza- tion. Thus, similar to several anuran species, concave-eared torrent frogs also display noise-dependent adjustment of vocal pitch in their vocalizations for making them more audible 展开更多
关键词 Acoustic adaptation Ambient noise Odorrana tormota Sound communication
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